Detained Iranian Pastor Youcef Nadarkhani is alive but still in imminent danger of being executed for his faith by authorities, the American Center for Law and Justice said Monday.

ACLJ Executive Director Jordan Sekulow confirmed earlier in the day that the Christian leader had not been killed yet, although an execution order has been signed for "death by hanging" for the pastor.

"It is critical that we keep international pressure on Iran to spare this Christian pastor's life," Sekulow posted on the ACLJ website.

"Please continue to pray and share his story, as we continue fighting to save his life," he added.